{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234183",
    "entityType": "User",
    "nonce": "0x9787bc02de24868cd2b1ac831f521d429465c277496e310aaa851e97ba5a3854",
    "signature": "0x3e3798c5d510e2b9ddd042768d802a91f4fcf8269deac55c08bfc57d2a4d6a4e1fab7f37cc6df4e2d1861f36c5631e31428d85fa8765252059a2c84128b1c7711c",
    "signer": "0xA15B16B79329FeD8a32235A0fe8eac6473Ae766c",
    "userId": "511938019"
  }
}